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Chap 13 part IV
Cerebellum and Onward
Question | Answer |
---|---|
Cerebellum Function | 1. Smoothes and Coordinates body movements |
Cerebellum: Cerebellar Peduncles- tracks connecting cerebellum to brains stem | 1. Superior Cerebellar Peduncle- midbrain 2. Inferior Cerebellar Peduncle- medulla oblangata 3. Middle Cerebellar Peduncle- Pons |
Cerebellum must continuously receive information from? | 1. Inner Ear- equilibrium 2. Peripheral Propioceptors- movement of limbs 3. Pyramidal Tract- information from cerebral motor cortex |
Cerebellum two hemispheres divided into what lobes? | 1. Anterior Lobe 2. Posterior Lobe 3. Flocculonodular Lobe -connected by VERMIS |
Meninges Functions | 1. Protect and cover CNS 2. enclose and protect vessels supplying CNS 3. contains CSF |
Meninges: Three Tissues | 1. Dura Mater 2. Arachnoid Mater 3. Pia Mater |
Cerebrospinal Fluid | 1. Formed in CHOROID PLEXUSES 2. Circulation From: Ventricles, Medial and Lateral Apertures, Subarachnoid Space, Arachnoid Villi, and Blood of superior sagittal sinus |
Ascending Tracts in Spinal Cord | 1. Carry sensory information to the brain 2. Three Types: Dorsal Column Pathway, Spinocerebellar Pathway, and Spinothalamic Pathway |
Dorsal Column Pathway | -Ascending Tract 1. Discriminative touch, pressure, and limb position |
Spinocerebellar Pathway of Ascending Tract of Spinal cord | -Ascending Tract -subconscious proprioception |
Spinothalamic Pathway | -Ascending Tract -Pain and temperature |
Descending Tracts of Spinal Cord | deliver motor instructions from the brain to the spinal cord |
Descending Tracts One Type | Pyramidal Tracts |
Pyramidal Tracts | -Descending Tract -control precise and skilled voluntary movement |